hg: lambda/lambda/jdk: Optimize setting of combined op flags on head stream.

[paul.sandoz at oracle.com]

Changeset: 15e1cce39200
Author:    psandoz
Date:      2013-04-12 17:22 +0200
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/15e1cce39200

Optimize setting of combined op flags on head stream.

! src/share/classes/java/util/stream/AbstractPipeline.java
! test-ng/boottests/java/util/stream/StreamOpFlagsTest.java